Wey Knife Gate Valve Model VL
Stainless Steel Full Lug Design
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Wey Knife Gate Valve Model VL
The Wey Knife Gate Valve Model VL is truly a high performance knife gate valve design. This valve provides zero leakage bi-directional
shut-off, has mechanically retained seals, has a compact non-rising stem design, and can be repacked in service under full pressure.
The chest and seating areas of the valve are self-cleaning. The reduced chest area, minimal gate arc, and contoured flushing corners
in the body prevent jamming by eliminating material build-up in the chest, body and seating area. The gate seals against a combination
metal and resilient seat and is guided for the full stroke length of the valve. The valve is tested and rated for zero leakage (liquid or gas)
downstream and to atmosphere.
Compare these unique features
n Transverse seal eliminates stuffing box and permits repacking
under full pressure and without system shut-down.
See live demonstration
n Mechanically retained resilient seat provides dual metal-tometal and resilient seating for zero leakage bi-directional
shut-off from absolute vacuum to rated valve pressure.
n Bi-directional design. Gate is guided and supported for
smooth operation throughout the entire stroke with flow in
both directions.
Characteristics
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Solid 316 SS cast lugged body
316 SS hard chrome finished gate
Aflas® seals standard
Phenolic Scraper Blades standard
2" - 36" size
TAPPI & MSS-SP81 Face-to-Face
Flange bolting per MSS-SP81
150 psi CWP design
2" - 12" 150 psi shut-off
14" - 36" 90 psi shut-off
Higher pressure ratings available
Other body, gate, scraper and seal materials available
All styles of actuators available
The Model VL is specifically designed to meet the
requirements of tough slurry, chemical and dry material
handling applications. Typical applications include, but are
not limited to, Pulp Stock, Air Conveyed Fly Ash and Cement,
Waste Water, Abrasive Slurry and Sludge. These valves are
successfully applied in the Pulp & Paper, Mining, Power, Steel,
Municipal, Automotive, Chemical, Refining and Bulk Handling
industries. There are applications for the VL product in virtually
all industries.
The Model VL combines rugged construction with time-tested
design features found in no other knife gate valve. If you are
experiencing knife gate valve failures, try a precision-built Wey
Knife Gate Valve. You will wish all of your knife gate valves
were Wey High Performance Knife Gate Valves.
n Contoured interior body promotes flushing action to
prevent build-up of process media in the seating area.
n Solid steel or stainless steel topworks provide maximum
strength to prevent damage due to operator abuse or
vibrating conditions.
n Non-rising stem design saves space and reduces stem nut
repair problems.
ISO 9001: 2008/PED-Annex III (Mod H)
Actuator Options
Accessories
Handwheel
Chainwheel
Square drive nut
Manual bevel gear
Pneumatic cylinder
Hydraulic cylinder
Electric actuator
SolenoidLock-out
Mechanical limit switches Position indication scale
Proximity switches
OSHA yoke guard
Wear ring
Scale cutter
Pneumatic positioner
Weyotine shear cutter
Electronic positioner
Powder-Pac option
V-Port insert
Note: Consult factory for details
Sizes and Dimensions
For optional Cylinder sizes and dimensions, consult the factory.
K = Cylinder port size 4" - 12" typ. Sistag Cyl.
N = Cylinder diameter not actual outside dimension
Note: Standard Cylinders are shown (other sizes are available)
O = Depth of Blind Tapped Holes in Chest Area of Valve
P = Number of Blind Tapped Holes in Chest Area of Valve
Handwheel
Valve
2"
3"
4"
6"
8"
10"
12"
14"
16"
18"
20"
24"
30"
36"
A
1.97
3.15
3.94
5.90
7.84
9.87
11.81
13.78
15.75
17.72
19.68
23.62
29.52
35.43
B
1.87
2.00
2.00
2.25
2.75
2.75
3.00
3.00
3.50
3.50
4.50
4.50
4.62
4.62
C
4.75
6.00
7.50
9.50
11.75
14.25
17.00
18.75
21.25
22.75
25.00
29.50
36.00
42.75
Note:
Bevel Gears (3:1) are recommended for 6" - 16" Valves
Bevel Gears (4:1) are recommended for 18" - 24" Valves
Bevel Gears (6:1) are recommended for 30" and larger Valves
Consult factory for special applications.
Bevel Gear
D
6.00
7.50
9.00
11.00
13.50
16.00
19.00
21.00
23.50
25.00
27.50
32.00
38.70
46.00
E
5/8"
5/8"
5/8"
3/4"
3/4"
7/8"
7/8"
1"
1"
1-1/8"
1-1/8"
1-1/4"
1-1/4"
1-1/2"
F
10.90
12.44
15.47
19.57
22.72
26.65
29.80
33.30
36.61
42.32
45.61
54.17
–
–
G
6.30
7.87
7.87
11.81
11.81
11.81
15.75
15.75
15.75
19.68
19.68
24.75
–
–
H
–
–
–
18.15
21.29
24.84
28.93
33.42
35.74
40.75
44.66
53.75
63.77
84.50
J
–
–
–
11.50
11.50
11.50
14.75
14.75
14.75
14.75
16.75
23.50
23.50
23.50
Pneumatic Cylinder
Knpt
1/4"
1/4"
1/4"
1/4"
1/4"
1/4"
3/8"
3/8"
3/8"
3/8"
3/4"
3/4"
3/4"
3/4"
L
–
–
–
12
12
16
16
18
18
18
24
24
24
30
M
15.25
17.80
20.75
27.28
32.40
38.90
44.21
54.25
61.50
67.50
74.25
86.25
97.50
111.50
N
4"
4"
4"
6"
8"
10"
10"
12"
12"
12"
14"
16"
16"
18"
O
–
–
0.86
0.94
1.12
0.75
0.83
0.78
0.94
0.98
1.37
1.22
0.98
1.77
P
–
–
4
4
4
8
8
8
8
12
12
12
20
20
Large part machining
with a 2 pallet CNC
machining center
Flexible manufacturing
system with integrated
material management
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